<svg xmlns="http://www.w3.org/2000/svg">
<defs>
<clipPath id="clip" clipPathUnits="objectBoundingBox" transform="translate(10, 10)">
<rect width="0.5" height="0.5"/>
</clipPath>
</defs>
<rect x="10" y="10" width="100" height="100" fill="red"/>
<rect width="200" height="200" fill="green" clip-path="url(#clip)"/>
</svg>